"Jason Clair is accused of shooting and killing James and Joel Kun outside a St. Cloud night club last year. Clair said he killed the two brothers in self-defense.
The defense said the Stand Your Ground hearing was postponed so new gun evidence could be reviewed.
Relatives on both sides had shown up as witnesses for the hearing, but after it was canceled, the fight broke out outside the courtroom.
Investigators said the brothers' father, James Kun Sr., their friend, Jeremy Milyon and defendant Jason Clair's stepfather, James Barker, became involved in an argument, which then led to a physical altercation. Court deputies and a St. Cloud police officer intervened, and all three suspects were taken into custody.
Parker apologized as he was being handcuffed.
"Sorry. He hit me first. He hit me. What was I supposed to do?" Parker asked.
St. Cloud Detective Christian Anderson told WFTV reporter Kathi Belich that in the 17 years he has been on the job, he has never seen anything like that incident.
"Obviously, emotions ran high. I stepped in to intervene, just based on the hostile actions, and while trying to stop it, I ended up getting struck in the back of the head," said Anderson.
Deputies pulled Tasers out but did not use them.
Officers said that after speaking with all three individuals and numerous witnesses, as well as reviewing evidence of the brawl, Parker and Kun were arrested and taken to the Osceola County Jail" - @ochsman1